How simple can a trading system be?

It can be as simple as going long on a positive line and short on a negative line, without any indicators. It can even be as simple as trading at the first thought, without any indicators or reasons. The simpler it is, the more it tests cognition. Simplicity is just an appearance. What is important is why it is simple? Because simplicity can be efficient and have strong replicability. This must be possible only after experiencing a lot of complexity and deeply understanding the pros and cons and making choices. Therefore, traders who can be simple are not simple. They need deep trading cognition as support. Trading cognition is the core competitiveness of a trader and the key to determining whether a trader can make money.

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